Problema Solution
Christopher is three times as old as omar. Ten years ago, christopher was eight times as old as omar. How old is omar now?
Answer provided by our tutors
Let
c = the age of Christopher now
o = the age of Omar now
Christopher is 3 times as old as Omar:
c = 3o
10 years ago, Christopher was 8 times as old as Omar:
c - 10 = 8(o - 10)
by solving the system of equations:
c = 3o
c - 10 = 8(o - 10)
we find:
c = 42 years
o = 14 years
click here to see the step by step solution of the system of equations:
Christopher is 42 years old now.
Omar is 14 years old now.